I have some sound deadener that does not have any "sticky" on it. I have to spray both surfaces and it is kinda messy. Where do you go to get the stuff you are using with the sticky side?
Some people go to the hardware store and buy a roofing product - though I'm not sure if it's butyl or asphalt based. If it's asphalt you'll be dealing with odor and potential delamination.
I got the RAAMmat directly from the guy who sells it:
